Showing papers by "Chonbuk National University published in 2022"
TL;DR: In this paper, the authors developed CoP-nitrogen-doped carbon@NiFeP nanoflakes (CoP-NC@NFP), derived from MOF enriched with multiple active sites for multifunctional water splitting and zinc-air battery applications.
150 citations
TL;DR: In this paper, a core-shell nickel-iron oxide on a highly porous N-doped carbon nanosheet (CS-NFO@PNC) via a facile solvothermal calcination route was developed for the development of high efficiency energy conversion and storage devices.
Abstract: Constructing an electrocatalyst with highly durable active and cost-effective core-shell with a porous carbon nanosheet for the development of high efficiency energy conversion and storage devices. Herein, we developed core-shell nickel-iron oxide on a highly porous N-doped carbon nanosheet (CS-NFO@PNC) via a facile solvothermal calcination route. The optimized CS-NFO@PNC-700 showed remarkable electrocatalytic activity towards ORR (0.85 V vs RHE), OER ƞ10 = 217 mV, and HER ƞ10 = 200 mV with excellent durability towards the corresponding half-cell reactions. Further, we investigated the ORR, OER, and HER mechanistic pathways of the electrocatalyst using the density functional theory. Finally, we fabricated a rechargeable liquid electrolyte-based zinc–air battery with CS-NFO@PNC-700 as the cathode which displayed an improved power density of 130 mW cm−2 at 217 mA cm−2 with excellent durability of 180 h. The rechargeable flexible quasi-solid-state zinc–air battery with CS-NFO@PNC-700 air cathode, which exhibited excellent long term durability over 40 h at 5 mA cm−2.
116 citations
TL;DR: In this article, the authors addressed and analyzed recent advances in the thermochemical conversion of various lignocellulosic biomasses and summarized the operation conditions and results related to each thermochemical transformation process such as pyrolysis (torrefaction), hydrothermal treatment, gasification and combustion.
85 citations
TL;DR: In this paper, a hierarchical composite electrode with 3D hollow and porous carbon nanofibers (3DHPCNF) was used as a free-standing electrode material for supercapacitors and endowed high capacitive behavior at both positive and negative working potentials.
75 citations
TL;DR: In this paper, a trivalent gadolinium (Gd) ions were added to the MnO2 nanosheets as anode for all-solid-state asymmetric supercapacitors (ASCs).
69 citations
TL;DR: In this paper, an efficient and robust electrocatalyst was prepared for overall water splitting in alkaline media by rational design of two-dimensional metal-organic framework (MOF)-derived mesoporous CoS2 nanoarrays coupled with FeS2@MoS2 layers.
49 citations
34 citations
TL;DR: In this paper, an eco-friendly, in-situ, and one-step synthesis of ZnO-Co3O4 core-shell heterostructure (ZC-CSH) using the hydrothermal process as a transcendent nanomaterial for the supercapacitor applications was reported.
34 citations
TL;DR: A brief overview of the most widely produced and used polyacrylonitrile (PAN)-based carbon fibers can be found in this article, where a review of PAN-based carbon fiber properties is presented.
33 citations
TL;DR: In this paper, a proton exchange membrane fuel cell (PEMFC) equipped with polybenzimidazole (PA-PBI) membrane was exploited to determine the effects of changing type and stoichiometry of feed gas at operating temperature from 120 to 160°C.
33 citations
TL;DR: In this paper, the restricted microbial tolerance for lead and tin during bio-leaching of waste printed circuit boards (WPCBs) and lower extraction yields of valuable metals were dealt with.
TL;DR: In this article , the phenylsulfonic-acid functionalized and unzipped graphite nanofiber (SO3H-UGNF) was studied as a potential proton-conductive material to embed in a sulfonated poly(ether ether ketone) (SPEEK) to create proton exchange membrane (PEM) for polymer electrolyte fuel cell (PEFC) working under low relative humidity (RH).
TL;DR: In this paper, a visible-light active N,S-codoped TiO2 incorporated with carbon nanotubes (CNTs) was synthesized by a multicomponent heterojunction scheme.
TL;DR: NiNCs-1T-Mn-VTe2 NS as mentioned in this paper showed excellent performance requiring only HER−overpotential of 61mV to reach 10 µm−cm−2 and OER overpotential (OER) and hydrogen evolution reaction (HER) performances.
Abstract: Metallic (1T) transition metal dichalcogenides (TMDCs) shows great potential for electrocatalytical water−splitting (ECWS). Among different 1T−TMDCs, vanadium (V)−based 1T−TMDCs has highest thermodynamic stability. Now, among different V−based 1T−TMDCs, 1T−VTe2 holds the best potential for ECWS due to strongest interlayer coupling between V and Te. In the present study, we have developed nickel nanoclusters (NiNCs) hybridized and manganese (Mn) intercalated and doped 1T−VTe2 nanosheets (NiNCs-1T-Mn-VTe2 NS) for ultra−low potential ECWS. Mn doping and intercalation in 1T−VTe2 (1T−Mn−VTe2) significantly improve ECWS efficacy following improving oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performances. Hybridization of NiNCs with1T−Mn−VTe2 develop a true ECWS−catalyst NiNCs-1T-Mn-VTe2 NS for ultra−low potential water−splitting. NiNCs−1T−Mn−VTe2 NS showed excellent performance requiring only HER−overpotential of 61 mV to reach 10 mA cm−2 and OER overpotential of 258 mV to reach 40 mA cm−2. NiNCs−1T−Mn−VTe2NS (+ −) device required a cell potential of 1.51 V to reach 10 mA cm−2.
TL;DR: In this paper, a 3D Co5.47N/Fe3N heterostructure wrapped with the 3D nitrogen-doped carbon nanotube and graphene framework is proposed to improve the density of states at the Fermi level, which enhances the redox kinetics and adsorption capability.
TL;DR: In this paper, polypyrrole/zeolite (PPy/Ze) nanocomposite was prepared and subsequently assessed for the removal of Reactive blue (RB) and Reactive red (RR) from synthetic solution.
TL;DR: In this paper, the authors investigated predictors for academic success, including satisfaction with online class and academic achievement, in the coronavirus disease 19 (COVID-19) pandemic era.
TL;DR: In this paper, a novel framework utilizing neural network-based concepts along with reduced feature vectors and multiple machine learning techniques was constructed to classify the mitotic and non-mitotic cells.
TL;DR: In this article, the authors demonstrate the conversion of disposable polypropylene (PP) masks into non-graphitizable carbon powders that can be applied as anode materials in sodium ion batteries.
TL;DR: In this paper , the authors demonstrate the conversion of disposable polypropylene (PP) masks into non-graphitizable carbon powders that can be applied as anode materials in sodium ion batteries.
TL;DR: In this article, a hierarchical cobalt selenide (CoSe2) nanowire array on Ni-foam was designed to serve as a positive electrode for asymmetric supercapacitors.
TL;DR: In this paper , the authors investigated the feasibility of sustainable production of polylactic acid (PLA) and biodiesel from food waste (FW), with a plant capacity of 50 tons/day.
TL;DR: In this article, the authors investigated the feasibility of sustainable production of polylactic acid (PLA) and biodiesel from food waste (FW), with a plant capacity of 50 tons/day.
TL;DR: In this article , the degree of oxidation had a directly proportional relationship with the thickness and d-spacing of the specimens, and Raman spectroscopy was also employed to further verify the proportional relationship between the degrees of oxidation and the thickness of the GO specimens.
TL;DR: In this paper , the radial microstructure development of polyacrylonitrile-based carbon fibers is traced during continuous carbonization from 400 to 1400 °C, and it is confirmed that they undergo four distinctive stages depending on the temperature.
TL;DR: In this article , high-quality p-type semiconducting Co3O4 with mixed morphology of nanoparticles/nanorods is synthesized using a hydrothermal route for high response and selective hydrogen sulphide (H2S) sensor application.
TL;DR: In this paper, a new strategy was employed for the rational design of 3D hierarchical oxygenated nickel tungsten selenide on conductive nickel foam substrate (O−Ni1−xWxSe2/NF) by a low-cost hydrothermal process, followed by a partial controlled-selenization process.
TL;DR: Wang et al. as mentioned in this paper developed a loop-mediated isothermal amplification (LAMP) for the visual detection of porcine circovirus 4 and evaluated its sensitivity, specificity, and applicability in clinical samples.
TL;DR: In this article , several reagents (dithionite, hydrosulfide, sulfite, persulfate, sulfate radicals, and hydroxyl radicals) were evaluated for the degradation of 1,2-DCA.
TL;DR: In this article, an environmentally sound method for valorization of plastic waste is suggested, where pyrolysis of polycarbonate-containing plastic waste such as automotive headlight housing (AHH) was carried out using CO2 as a co-reactant.